| Plant | Low PPM | High PPM | StdDev | *Reference | |
|---|---|---|---|---|---|
| Brassica oleracea | Stem | -- | 1.33 | * | |
| Camellia sinensis | Leaf | -- | -- | * | |
| Citrus aurantium | Plant | -- | -- | * | |
| Ficus carica | Fruit | -- | -- | * | |
| Glycyrrhiza glabra | Root | -- | 2.0 | * | |
| Hyacinthus orientalis | Flower | 0.24 | 3.45 | -0.7 | * |
| Jasminum officinale | Flower | 42.0 | 95.0 | 1.4 | * |
| Lonicera japonica | Flower | 0.001 | 0.087 | -0.7 | Schlotzhauer, W.S., S.D. Pair, and R.J. Horvat. 1996. Volatile constituents from the flowers of Japanese Honeysuckle. J. Agric. Food Chem. 44:206-209. |
| Robinia pseudoacacia | Flower | -- | -- | * | |
| Sambucus nigra | Leaf Essent. Oil | -- | -- | * | |
| Scutellaria baicalensis | Root Essent. Oil | -- | -- | * | |
| Stellaria media | Plant | -- | -- | * | |
| Tecoma stans | Plant | -- | -- | * | |
| Uncaria guianensis | Leaf | -- | -- | * | |
| Zea mays | Shoot | -- | -- | * | |
| Zea mays | Leaf | -- | -- | Duke, J. A. Writeups or information summaries on approximately 2,000 economic plants, USDA, ARS, Beltsville, MD 20705. |